Automatic stop for sound-reproducing apparatus



F. J. FRAZEE.

AUTOMATIC STOP FOR SOUND REPRODUCING APPARATUS.

APPLICATION FILED SEPT. 23. 1919.

1,40 9, 9 Patented Mar. 14, 1922.

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F. 1. FRAZEE.

AUTOMATIC STOP FOR SOUND REPRODUCING APPARATUS.

APPLICATION FILED SEPT} 23, ms.

1,409,539, Patented Mar. 14, 1922.

3 SHEETS SHEET 2.

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F J. f'mz F. J. FRAZEE. AUTOMATIC STOP FDR SOUND REPRODUCING APPARATUS.

APPLICATION FILED SEPT= 23, I919.

Patented Mar. 14, 1922.

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FRANK J. rnsznn, or osaen, Iowa.

AUTOMATIC STOP. FOR SOUND-REPRODUCING APEARATUS.

Specification of Letters latent. Patented Dia 14, 1922.

Application filed September 23, 1919. Serial No. 325,755.

T 0 (ZZZ whom it may concern:

Be it known that I, FRANK J. FRAZEEH citizen of the United States, residing at Osage, in the county of Mitchell and State of Iowa, have invented certain new and useful Improvements in Automatic Stops for Sound-Reproducing Apparatus, of which the following is a specification.

This invention relates to improvements in sound reproduction apparatus and more particularly to an improved means for automatically stopping the motor of such an apparatus when the stylusreaches the end of the record groove.

One of the objects'lof the present invention is to provide in mechanism of the class mentioned, means forbraking the motor' automatically when the stylus reaches-the end of the record groove and which means will accomplish this result without the provision of any stop I devices or other 7 attachments to the record, to the record tu-rn- 7 table, or to the sound box of the reproducing apparatus. i i I Another object of the invention is to provide in an apparatus of this class, a sound 'box rest normally yieldably supported in elevated position and designedto be depressed when the sound box is disposed thereon, and means actuated automatically through depression of the said rest for brakingthe motor of the apparatus so that the motor will remain inactive so long as v the sound box is in position upon its rest.

A further object of the invention is to so construct the means above referred to that motor or any other portion of the repro-' duction apparatus per se.

A still further object of the invention is to so construct the automatic startingfand stopping mechanism thatthe same may be conveniently embodied in the, construction of practically all standard types of sound reproduction apparatus.

In the accompanying drawings: 7

Figure 1 is aside elevation of themechanism embodying the present invention;

Fig. 2 is a rear-elevation of the mechanism; v

Fig. 3 is a top plan View of the mechanism;

Fig. 4 is a View. similar to Fig. 3 but "illustrating the parts in another position;

Fig. 5. is a detail vertical transverse sectional view througha portion ofthe mechanism. I

In the drawings the numerall indicates the baseboard of the reproducing apparatus which ordinarilyfconstitutes the top of the usual boX in which'the motor of the apparatus is housed, and theniuneral 2 indicates the rotary turntable which is'to supportithe .disk record, the shaft for supporting and imparting rotary motion to this table being indicated by'the numeral '3 and being driven by the motor which is indicated in general in the drawings by the numeral'A but which is not illustrated in detail inasmuch as in itself'it constitutes no part of the present infvention.

However, this motorlincludes the usual governor shaft indicated in general by the numeral 5 and this shaft, for the puri poses of the present 7 invention, has fixed upon itva brake element which in the present instance is in the nature of a disk 6 although this element may be in the nature of a wheel,

drum, or cylindrical enlargement upon the "shaft The motor frame is indicated in general by the numeral 7 and the same supports the frame in which the mechanism of the present invention .is mounted, this latter frame being indicatedoin general by the numeral 8.. -Rotatably mounted in suitable bearings in-the frame- 8 is ashaft9 upon one end of which is fixed any suitable type of gear element 10 .driven either from the drive gear of the motor indicated by the numeral 11 or from any other arrangementof gearing. Thus when the motor is; operating, rotary motion w1ll be ilnparted'to the said shaft 9. This shaft, for purpose .to be presently de-,

scribed, has fixed upon it at its other end a 7 disk 12 provided upon one face with ,an an-' nular'series of cam lugs 13 which may, if desired; bestruck out from the material of the disk, the outer sides 01' faces of the said lugs being all inclined in the same direction with relation to 1. direotionof rotation of the disk. Upon the opposite face of the disk there is provided an annular series of laterally projecting studs or pins '14 and each of these studs or pins is located at a point opposite the inner end or low point of a resiiective one of the earnin s 13 as clearl shown in Figs. 1, 3 and 5 of the drawings.

The tone arm of the reproduolng apparatus is indicated in general by the numeral 15- and that portion of the said arm which extends below the board 1 is indicated by the numeral 16, the arm being provided with the usual swivel connection or hearing 1'7 in the board 1 so as to adapt the arm to, swing laterally and therefore permit it tofollow the record groove as the stylus travels therein, the sound box being indicated by the numeral 18 and the said stylus by the numeral 19. The connection 17 is movable with the tone arm 15 in the swinging movement of the latter and this connection is provided beneath the board 1 with acollar 20 having I The numeral 7 22 indicates a drag arm provided at .its inacircumferential groove 21.

ner end with an annularfriction collar 23 split at a point in its periphery as indicated by the. numeral 24,.this collar being frictionally seated within the groove 21 in the movement of the arm 22 with the tone arm may be overcome. and in fact isintermittently overcome in the operation of the mechanism of the present invention as will be presently made clear The. numeral 25 indicates an actuating lever which is mounted as at 26 upon the frame 8 for lateral oscillatory motion. this lever being provided near its pivoted end with a lateral arm-29 which projects through .a. slot .or opening-30formed in'thetsaid frame .8 and which is provided at its end with an upstanding pin 31 engaging between spaced ciwhich is pivotally. mounted as at 36 Upon fingers 32 formed by bifurcating the free end of the drag arm'22. At its free end the actuating lever '25 is bifurcated to form spaced fingers one indicated by the numeral 33 and the other by the numeral 34. these fingers lying at opposite sides' ofthe disk 12, as clearly. shown in Figs. 3 and 4 of the drawings and being,.generally speaking, re-

spectively in the path of movementof the camlugs 13 and trip pins-l4.

The'numeral35 indicates abrake lever the frame 8 and. which carries between its ends. a brake block or shoe 37 of felt or other suitable material designed, when the lever is swungupwardly, to be brought into engagement with the lower side of the periphery of the brake'disk 6,as'clearly shown in Fig. 1 of the drawings. Near its free end the brake lever 35 works in aslot 38 formed in an outstanding bracket portion 39 upon the frame 8, and adjacent this point the actuating lever 25 is provided with a lifting finger 40 projecting from its upper sideand having a transverse engaging upperend-41 located directly beneath and designed to be brought into engagement with the brake lever 35 under conditions to be' presently explained, the actuating lever 25 being resilient whereby it may be sprung upwardly as well as having the lateral oscillatory motion heretofore referred to.

The numeral 42 indicates a. trip lever which is pivotally mounted as at 43 upon the frame 8, and one end of this lever extends between the free ends of the brake lever: 35 and actuating lever 25, as clearly shown in, Figs. 1 and 5 of the drawings, this endof the. lever being indicated by the numeral 44 V and the lever being provided at its said end with a downwardly projecting trip finger, indicated by the numeral 45. A. spring .46. is connected to the lever near'its other ;'end, and to the under side of theQboard 1 land yieldably supports the last mentioned end of the lever in elevated position. Pivotally connected at its lowerend to the said last. mentioned endof the lever, as indioatedby the numeral 47-, is a rod 48 which at its upper end is provided with a head 49 constituting arest for the sound box 18, the rod 48 T fitting slidably through thebaseboardl, and,

being normally supported in elevated position through the said lever 42 and the spring 46. I

The operation of the mechanism is;as follows: When the reproducing apparatus is not in use, the sound box 18. or its stylus19 is disposed upon the resti49, as shownin Fig. 1 of the drawings andthe weight. thereof will result in the rod 48 being depressed thus swinging the corresponding end of the'trip;

lever 42 downwardly against the tensionof the spring 46 and swinging the other end 44 of the said lever upwardly andint-o engagement with the outer end of'the brake lever 35. In this manner the brake lever is swung upwardly so as to bring its shoe 37 into braking engagement with the disk 6 :and the motor is restrained from operation. As soon, however, as the sound box is removed from the rest 49 asfor example when it is lifted: immediatelyprior tothe playing of a record, the spring 46 will act to swing the end of the lever 42 to which it is connected upwardly, swinging the opposite end of the lever downwardly and thus permitting-the tor to operate. It will be evident therefore that so long as the sound box' is in position resting upon the rest 49, the motor will be restrained from operation and that as soon as the sound box is lifted from the rest the motor will be automatically set inoperation. I" Assuming that the sound box has beenlifted from the rest and has been positioned with its stylus l9 engaging in the record groove, the stylus will'be carried gradually toward the center of the disk as it travelsin the groove, and consequently there will be a gradual inward swinging movement of the rie'd thereby. This will tend to impart corresponding-movement to thedrag arm 22 and as a result this arm, through coaction of its fingers 32 with the pin'31, will exert'a drag upon the extension 29of the actuating lever 25 to swing thesaid lever-inwardly so that its finger'33 will be positioned in the path of movement of the cam lugs 13. As each of these lugs passes the finger 33, it will act against the finger to swing the actuating lever 25 upon its pivot in an outward direction to bring the finger 84 thereof into the path of movement of the trip studs 14. In this movement of the lever 25, the drag arm 22 will, of course, be correspondingly moved through coaction of the pin 31 with the fingers 32 of the said drag arm, the frictional force normally providing for movement of the arm 22 with the tone arm being overcome. As soon, however, as each lug 13 passes the finger 33, the tone arm in continuing its inward swinging movement and carrying with it the drag lever 22 will return the actuating lever 25 to its original position by swinging the said lever inwardly so that again the finger 33 will be'brought into the path of movement of the cam lugs andthe finger 34 will be brought to position out of the path of movement of the studs or trip pins 14. This operation will continue so long as the stylus is traveling in the spiral length or rod groove but as soon as the stylus reaches the inner end of the groove it will no longer be carried inwardly toward the center of the record and consequently the tone arm 15 will cease its inward swinging movement. Therefore, the drag arm 22'will no longer be actuated to return the actuating lever 25 to the position shown in Fig. 4 in which position the finger 34 will clear the trip pins 14,-but the said actuating lever 25 will, on the other hand, remain in the position shown in Fig.

3 of the drawings. Then as one of the trip pins 14 is brought into engagement with the finger 34, the actuating lever 25 will be sprung upwardly so that the lifting finger 40 will engage beneath the brake lever 35 and swing the said lever upwardly to brak ment into coactive engagement with the first ing position. Atthistimethe parts will'be I in the position shown in Fig. 5 of'the drawing's, thetrip finger 45 being located'close-to the'outer edge of the actuating lever'25, and the inner' end of the trip lever 42'being lowered position. If now the soundbox is lifted from the record and the tone arm is swung to inactiveposition and the sound box is disposed. upon the rest 49, the rod 48 will be dep ressed thereby rocking the lever '42 so as to swin'g'its inner en'dupwardly.

I11 this movement of the lever the finger 45 will ride againstthe outer edge of the actuating lever 25 and swing this lever upon its 7 pivot so as to-disengage the finger 34 from 1 y the stud or' pin 14by which it has been eletone arm 15 together Wlth the collar 20 carthe inner end ofthe lever 42 will ee anuew V in its upward movement until it has engaged and lifted the outer end of the brake lever bringing h sh es in braking. engagement with'the brake disk 6.T

Having thus described'the invention, what is claimed as new is; V

1. In stop mechanism forsound reproduction apparatus, the combination witha movable tone arm, and a motor including abrake element, of a brake element supported to assume by gravity a position out of 00-. active relation to the first mentionedbrake element, and means operable to automatically move the gravity actuated brake ele- 00 I mentioned brake element upon cessation of movement of the tone arm.

2. In stop mechanism for sound reproduction apparatus, the combination with a member movable in consonance with the travel of the stylus of the apparatus, and a motor including abrake element, of a brake element for eoaction with the motor brake ele-. ment and normally assuming by gravity a position out of coactive relation thereto, a rotary element driven from the motor, an actuating member for the second mentioned brake element, means upon the rotary element for coaction with the actuating meinber'to move thelatter into coactive engagement with the second mentioned brake element, and operative connection between the actuating" member and the said member which is movable in consonance with the travel of the stylus to efi'ectmovement of the actuating member in a manner to pro videagainst operation of the actuating mem- V berthrough rotation of the said rotatable motor and provided upon one face with a lad trip element and upon its other face with a cam element, an actuating lever having porv tions lying at opposite sides of the said rotatable member whereby in the rotation of the member the cam means "will shift the p actuating member, operative connection between the operating member and the member -Which is movable in consonance with the travel of the stylus tending to move the said actuating member to position out of coactive relation to the said trip element, and a brake element for actuation by the actuating element when the latter is engaged bypthe' trip element.

a. In stop mechanism for sound reproduction apparatus, the combination with a motor, of coacting brake elements, means for automatically actuating the same, a reproducer rest ,depressible by the weight of .the reproducer when in position thereon, -andmeans operable to, automatically efi'ect coaction of the said brake elements upon depression of the said rest.- I, t

5. In stop IIIQChELDlSIHrfOI' sound reproducoperable on cessationof reproducing move- 7 ment' of the said element.

6. Instop mechanism forisound reproduction apparatus, the combination with ;a

-' motor including. a brake'eleme-nt, of a yieldably supported reproducer rest, a brake element for coaction with the first mentioned brake element, operative connection between the said rest and the second menbrake element when. the said rest is do- In testimon whereofll signature. a ANK1J.ERAZEE. he

.tioned brake element for moving the latter into coactive. relation to the first mentioned [pressed by the weight ,oflthe reproducenfland motor actuated means for operating the brake elements 

